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    A PROCESS FOR PURIFYING CRUDE 4,4'-DICHLORODIPHENYL SULFONE
    4.
    发明申请
    A PROCESS FOR PURIFYING CRUDE 4,4'-DICHLORODIPHENYL SULFONE 审中-公开

    公开(公告)号：WO2021037682A1

    公开(公告)日：2021-03-04

    申请号：PCT/EP2020/073373

    申请日：2020-08-20

    Applicant: BASF SE

    Inventor： BLEI, Stefan ,  HAMANN, Jessica Nadine ,  METZGER, Lukas ,  SCHUETZ, Christian ,  GAO, Jun ,  THRUN, Frauke ,  MELZER, Andreas ,  MUELLER, Michael Klemens

    IPC: C07C315/06 ,  C07C317/14

    Abstract: The invention relates to a process for purifying crude 4,4'-dichlorodiphenyl sulfone comprising: (a) dissolving the crude 4,4'-dichlorodiphenyl sulfone which may contain water in an organic solvent in which 4,4'-dichlorodiphenyl sulfone has a solubility of 0.5 to 20% at 20°C and optionally adding water to obtain a solution which comprises 4,4'-dichlorodiphenyl sulfone, the organic solvent and 1 to 30 wt% water based on the amount of 4,4'-dichlorodiphenyl sulfone and water; (b) cooling the solution to a temperature below the saturation point of 4,4'-dichlorodiphenyl sulfone to obtain a suspension comprising crystallized 4,4'-dichlorodiphenyl sulfone; (c) carrying out a solid-liquid separation to obtain residual moisture containing 4,4'-dichlorodiphenyl sulfone and a mother liquor; (d) washing the residual moisture containing 4,4'-dichlorodiphenyl sulfone with an organic solvent in which 4,4'-dichlorodiphenyl sulfone has a solubility of 0.5 to 20% at 20°C; (e) optionally repeating steps (b) to (d); (f) drying the 4,4'-dichlorodiphenyl sulfone.

    PROCESS FOR PRODUCING 4,4`-DICHLORODIPHENYL SULFOXIDE
    5.
    发明申请
    PROCESS FOR PRODUCING 4,4`-DICHLORODIPHENYL SULFOXIDE 审中-公开

    公开(公告)号：WO2020161228A1

    公开(公告)日：2020-08-13

    申请号：PCT/EP2020/052970

    申请日：2020-02-06

    Applicant: BASF SE

    Inventor： GAO, Jun ,  THIEL, Indre ,  SCHUETZ, Christian ,  METZGER, Lukas ,  BEY, Oliver ,  BLEI, Stefan

    IPC: C07C315/00 ,  C07C317/14

    Abstract: The invention relates to a process for producing 4,4'-dichlorodiphenyl sulfoxide comprising: (I) reacting thionyl chloride, chlorobenzene and aluminum chloride in a molar ratio of thionyl chloride : chlorobenzene : aluminum chloride of 1 : (6 to 9) : (1 to 1.5) at a temperature in the range from 0 to below 20°C, forming an intermediate reaction product and hydrogen chloride; (II) mixing aqueous hydrochloric acid and the intermediate reaction product at a temperature in the range from 70 to 110°C to obtain an organic phase comprising 4,4'-dichlorodiphenyl sulfoxide and an aqueous phase; (III) cooling the organic phase comprising the 4,4'-dichlorodiphenyl sulfoxide to a temperature below the saturation point of 4,4'-dichlorodiphenyl sulfoxide to obtain a suspension comprising crystallized 4,4'-dichlorodiphenyl sulfoxide; (IV) solid-liquid-separation of the suspension to obtain a residual moisture containing solid 4,4'-dichlorodiphenyl sulfoxide comprising crystallized 4,4'-dichlorodiphenyl sulfoxide and mother liquor.

    PROCESS FOR PREPARING AN ORGANIC SULFONE
    6.
    发明申请
    PROCESS FOR PREPARING AN ORGANIC SULFONE 审中-公开
    制备有机硫磺的方法

    公开(公告)号：WO2018007481A1

    公开(公告)日：2018-01-11

    申请号：PCT/EP2017/066857

    申请日：2017-07-06

    Applicant: BASF SE

    Inventor： THRUN, Frauke ,  TELES, Joaquim Henrique ,  GAO, Jun

    IPC: C07C315/02 ,  C07C317/10 ,  C07C317/14 ,  C07C317/44

    Abstract: A process for preparing polyaryl ethers in which a polycondensation of the monomer building blocks is carried out using microwave irradiation leads to thermoplastic molding compositions having improved color properties.

    Abstract translation: 制备其中使用微波辐射进行单体结构单元的缩聚的聚芳基醚的方法导致热塑性模塑组合物具有改进的颜色性能。

    PROCESS FOR THE OXIDATION OF SULFOXIDES
    7.
    发明申请
    PROCESS FOR THE OXIDATION OF SULFOXIDES 审中-公开
    硫氧化物氧化过程

    公开(公告)号：WO2014191475A1

    公开(公告)日：2014-12-04

    申请号：PCT/EP2014/061097

    申请日：2014-05-28

    Applicant: BASF SE

    Inventor： PARVULESCU, Andrei-Nicolae ,  MÜLLER, Ulrich ,  SPIELMANN, Jan ,  VOGEL, Wilfried ,  GAO, Jun

    IPC: C07C315/02

    CPC classification number: C07C315/02 ,  B01J29/89 ,  C07C315/06 ,  C07C317/14

    Abstract: The present invention relates to a process for oxidizing a sulfoxide to the respective sulfone, said process comprising reacting the sulfoxide with hydrogen peroxide in the presence of a catalyst, obtaining a mixture (M) comprising the sulfone and the catalyst, wherein the catalyst comprises a porous titanium-containing silicate as a catalytically active material.

    Abstract translation: 本发明涉及将亚砜氧化成各种砜的方法，所述方法包括在催化剂存在下使亚砜与过氧化氢反应，得到包含砜和催化剂的混合物（M），其中催化剂包含 多孔含钛硅酸盐作为催化活性材料。

    PROCESS FOR PRODUCING 4,4'-DICHLORODIPHENYL SULFONE
    10.
    发明申请
    PROCESS FOR PRODUCING 4,4'-DICHLORODIPHENYL SULFONE 审中-公开

    公开(公告)号：WO2021037675A1

    公开(公告)日：2021-03-04

    申请号：PCT/EP2020/073359

    申请日：2020-08-20

    Applicant: BASF SE

    Inventor： GAO, Jun ,  THRUN, Frauke ,  THIEL, Indre ,  HAMANN, Jessica Nadine ,  SCHUETZ, Christian ,  BLEI, Stefan

    IPC: C07C315/02 ,  C07C317/14

    Abstract: The invention relates to a process for producing 4,4'-dichlorodiphenyl sulfone, comprising: (I) reacting thionyl chloride, chlorobenzene and aluminum chloride forming an intermediate reaction product and hydrogen chloride; (II) mixing aqueous hydrochloric acid and the intermediate reaction product to obtain an organic phase comprising 4,4'-dichlorodiphenyl sulfoxide and an aqueous phase; (III) cooling the organic phase to a temperature below the saturation point of 4,4'- dichlorodiphenyl sulfoxide to obtain a suspension; (IV) solid-liquid-separation of the suspension to obtain crystallized 4,4'-dichlorodiphenyl sulfoxide, and mother liquor; (V) washing the crystallized 4,4'-dichlorodiphenyl sulfoxide with a carboxylic acid to obtain carboxylic acid-wet 4,4'-dichlorodiphenyl sulfoxide; (VI) reacting the washed 4,4'-dichlorodiphenyl sulfoxide and an oxidizing agent in a carboxylic acid as solvent to obtain a reaction mixture comprising 4,4'-dichlorodiphenyl sulfone and carboxylic acid; (VII) separating the reaction mixture comprising 4,4'-dichlorodiphenyl sulfone and carboxylic acid into a residual moisture comprising 4,4'-dichlorodiphenyl sulfone as crude product and a liquid phase comprising carboxylic acid.

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